Sunshine Policy. In his New Year address for 2018, North Korean leader Kim Jong-un proposed sending a delegation to the upcoming Winter Olympics in South Korea. The Seoul–Pyongyang hotline was reopened after almost two years. At the Winter Olympics, North and South Korea marched together in the opening ceremony and fielded a united women's ice hockey team. As well as the athletes, North Korea sent an unprecedented high-level delegation, headed by Kim Yo-jong, sister of Kim Jong-un, and President Kim Yong-nam, and including performers like the Samjiyon Orchestra. A North Korean art troupe also performed in two separate South Korean cities, including Seoul, in honor of the Olympic games as well. The North Korean ship which carried the art troupe, Man Gyong Bong 92, was also the first North Korean ship to arrive in South Korea since 2002. The delegation passed on an invitation to President Moon to visit North Korea. Following the Olympics, authorities of the two countries raised the possibility that they could host the 2021 Asian Winter Games together. On 1 April, South Korean K-pop stars performed a concert in Pyongyang entitled "Spring is Coming", which was attended by Kim Jong-un and his wife. The K-pop stars were part of a 160-member South Korean art troupe which performed in North Korea in early April 2018. It also marked the first time since 2005 that any South Korean artist performed in North Korea. Meanwhile, propaganda broadcasts stopped on both sides. On 27 April, a summit took place between Moon and Kim in the South Korean zone of the Joint Security Area. It was the first time since the Korean War that a North Korean leader had entered South Korean territory. North Korean leader Kim Jong-un and South Korea's President Moon Jae-in met at the line that divides Korea. The summit ended with both countries pledging to work towards complete denuclearization of the Korean Peninsula. They also vowed to declare an official end to the Korean War within a year. As part of the Panmunjom Declaration which was signed by leaders of both countries, both sides also called for the end of longstanding military activities in the region of the Korean border and a reunification of Korea. Also, the leaders agreed to work together to connect and modernise their railways. On 5 May, North Korea adjusted its time zone to match the South's. In May, South Korea began removing